Engine-overhauling installation



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'Dec'. 19,1922.V

J. J; SCHWARZ. ENGINE OVERHAULING INSTALLATION. ,FILED MAR.25|1920.

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Dec. 19, 1922.

A TTORNEY.

Dec. 19, 1922.

1.1. SCHWARZ.

ENGINE OVERHAULING INSTALLATION.

,FILED MAL 25|1920.

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INVENTOR. www Jef/WA RZ. BY Mm ATTORNEY.

Patented Dec. 19, liQZZ.

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JUHNJ. SCHTARZ, OF REAYWOOD, NEW' JERSEY, ASSGNOR TOHENRY'1\EETZ, OF

` i A MAYVOOD, NRSV JERSEY. i l

vnireIivn-ovennenLinernsrniiizarioit v, Eipplication filed March 25,1920. Serial No. 368,712.

i o aZfw/iomfi may] concern.; f lle known that l, Joni): (l.@ici-riverine citizen ofi the United. States, residing Lat ivlaywood, inthe county of Bergen and State; o New Jersey, have invented certain newand-useful lmprovenients in Engine-Overhaiiling lnstallations,k of whichthe `following is specification.

This invention relates to lmachines vfor overhauling engines, and withregard to certain more specific features, the invention has especialutility in Vconnection`with T type Ford engines.

@ne oi the objects ot' the invention :is to provide an installa-tion bythe use of `which all of the various operations in the overhauling ofan` engine can be accomplished i with ease and dispatch.

' Another: object is to provide an installation oli the above typeby theuse of which disassembly, repair, reassembly and testing or' the enginecan be performedwith a. minimiun ot' trouble in setting up the engineforsaid operations. *i

' 5inother object ris to provide apparatus of the general type setforth, simpleV and com? pactl in construction which will permit with aminimum oi? effort all orfanycombination of the `following steps:disassembly of the engine, reaming of the crank shaft bearings, burningin ot the crank shaft and, other parts, reassemblingjoi the engine,running in and testing of the engine. i,

Another ob'ect is to provide in apparatus oi" the type set forth,simple, easily set, and vyet` effective means forsecurin'g the engine inplace upon the machine.v

Other objects will be in part obvious, iii part pointed out hereinafter.I Y

The invention accordingly consists in the features of construction,combinations of elements and arrangement ot parts which will be pointedout hereinafter, and the scope ol the application oi which will bepointed out in the following claims. f

Referring now to the accompanying draw ings in which is `shown one'oivarious possible embodiinents of the several features ot' thisinvention, 1 is a sectional side view of my machine., a Ford enginebeing shown in dotted linesin'place thereon.

' Fig. 2 is an end view oi my installation. Fig. 3 is a side elevationpartly in section 'of the engine carriage showing a Ford engine vcastingin place thereon as in Figjl.

Figa! is a detail view or" the burning iii connection, the driving linlrbeingr shown broken. i' f running in .Fig 6 is reamingconnection. n i'Similar reference characters refer to simisubst-a ntially 'a viewsimilar: to Fig. 4 oiitlie connect-ion, `and the dra-wings.

Referring now to the drawings, l have ar parts throughout the differentviews of show-n a machine for overhauling engines comprising a bed1,.mountedjupon legs 2. Upon" thebed there is proi'f'ided a power shaft33 mounted in bearings 4, 5, which are located iespectiveli7 ywithinstandards 6 and 7, rising `trom the bed 1. The delivery end of the powershatt is non-circular as at 69 for effecting a convenient drivingconnection as will appear below. ,The standards 6 and 7 also' preferablycarry near their lower ends the bearings 8 for the clutch shaft 10 towhich power 'for operating upon the engine to be overhauled istransmitted, preferably from an electric motor 11, through 4a belt l2 orthe equivalent, which drives by wayot example the drum 13 ot aclutchlel. The power is delivered from clutch shaft "l0 to power shaftthrough a pairl of mesh'- ing gears' 15, 16, .the former keyed to theshaft 10, and the latterr to the shaft Bgvgear 15` being by preferenceof smallerdia-meter than gear 16 tor effect torquemultiplication. j lThe clutch taken perse is of well known construct-ion and .not myinvention.y It may brieiiy be noted that ythe saine by preferencecomprises a friction band 9 within the inner periphery ofthe drum 13 anda lever 17 fulcrumed at one end 18 within the drum and deliveringpressure intermediate its ends 'through a linlr 1 9 to friction band 9for tightening the saine. A cone 20 is shiftable upon the clutch shaft10 by means oi' a lever 22 having a part .tittingin a groove 21 in cone20, the free end of leve-r 17 having a portion resting upon said cone.lt will be understood that the tightening of the clutch is effected bythrowing lever 22' whereby the cone is shifted to its extreme lett,- thecone a view vsimilar to `Fig. et ofthe ignated by the line ifi- A.

` ment with power shaft 3,'said carriage be- `sides oi' the cylindersoil the engine to ing mounted upon the bed l for adjustment about itssaid axis. For this purposel preferably provide upon the bed 1 acircular seat 25 preferably secured to the standard 7 by bolts, one otwhich appears at 60, as best.` shown in Fig. l. An arcuate seat 2e isprovided near the end ot the machine opposite the power shaft, said seatbeing coaxial With the seat 25. The carriage C by preference comprises apair of coaxial annular end members or rings 28 and 29 of differentdiameters, formed rigid with a pair of connecting.- cross `beams 30 and3l, the latter having the vgreater part of its length parallel to theaxis A-- The cross beams *are preferably channel shaped; the channels ofthebeams 30 and 31 embracino' lugs l6l, cast integrally with the annularend members 28 and r29. Any suitable means is employed for securing thecrossbeams to the annular members, such as bolts 70.` The ring 29 ispreferably of considerably larger diameter than the ring 28, andrestsupon the seat 24:. ln putting together .my assembling machine,-tlieengine carriage C is applied by slipping end member 28r over seat 25,the other end member seating upon seat 27. Any suitable stop, as shownfor instance at 62, serves to prevent longitudinal displacement of thecarriage. lt will be apparent lthat the carriage may readily be adjustedaboutits longitudinal axis A--A by raising or depressing one oic thecross beams, thus rotating the carriage about its seat 25, and Withinits seat 2st. The manner et supporting the carriage above described isthe ypreferred embodiment, and it will be-understood that differentforms of mountingrmay be employed.

`Means is provided tor securing the engine to be koverhauled upon thecarriage C, 'this means being preferably such as to permit ready accessto all parts oi the engine ior inspection, disassembly, repair,reassembly, adjustment and tbe'lilre. By preference this means comprisesan engine rest 26 rigidly secured, or if desired, 'formed as an integralpart with the cross beam 3l of the carriage C.- Therest is provided witha plurality` of troughs 27 Within which. are disposed the be repaired. ys

Any appropriate means is provided tor rigidly securing the engine tosaidengine rest, this means by preference extending in a planetransverse voi? the engine and inr'termediate the top and bottom thecylin dotted lines on Figs; l and 3, the Ford engine has four cylinders,f 32 and 33 as an integral part- With the upper cast in two pairs halt63 of the cranlrcase, there being a space 34 between ythe cylinderpairs. When my apparatus is used ior operating upon an engine ot thisgeneral type, l employ a bolt 35, having a head 36, said bolt beinginserted to extend upwardly as shown in lig.

l3, throughr the cross `beam 3l. cent-rally throughsaid rest 26 andperpernilieularly thereabove through the space 34e in vthe engine block.nut is then threaded upon the `free end of the bolt againstthe fiatsurface 38 formed particularly on Ford engines, thereby clamping theengine frigidly and accurately in position.

ltwvillbe noted that the sidesl o the troughs 27in the rest 26 willlimit the engine block against rotation. about tbe bolt 35 and the nut557 Will prevent they engine from undesired displacement along the boltlor removal therefrom, so that the sini bolt and nut serve to firmly andaccurately retain the entire engine in` position upon the carriage,Without in the least vinterfering with ready access to allparts oi theengine to be Worked upon. lt will be runderstood that other meansniay beprovided or mounting the engine in position` but I prefer to employ thespeciiic nieane` shown and described.l

As indicated in Figs. l and 3, the i ts are preferably so proportionedthat when the engine is mounted in position thereon. the axis of thecrank shaft `will extend along or coincide with the axis r et thecarriage for a purpose Which will appear fully below.- y y y In theuseo'f my apparatus the engine to be overhauled Will be bodilylaid uponthe engine, rest 26, with the sides ot the cylinders fitting into thetroughs 27, and the bolt 35 and nut 37 will be applied to iirmly Thecarriage C may be firmly `secured in any desired position about its axisby means of a friction strap 39. The strap preferably encircles the endring 29 and is secured the strap for securing firm frictional clampingengagement with the carriage. This lock by preference comprises a lever40 having a fulcrum 42 lodged within an eye 4Q' in one end of the strap,the opposite end ot' the strap 39encircling a stud 4l intermediate theends of the lever 40, the free end of said lever serving as an operatinghandle. To tighten the strap the lever 40 is merely depressed and thestrap end 44 will thereby be drawn in 'circumferential direction toperform the securing function. By raising the end of the lever 40 thestrap is rendered ineffective, opened or' unlocked.

After the engine has been disassembled. as above described, the carriageis clamped `in'such position as to dispose the engine block in invertedposition. The main crank shaft bearings arek now replaced and are reamedby power applied from the vpower shaft 3.

By preference the assembly sh'own'in detail in F ig. 6 is used foroperating the reaming tool 48 from the power shaft 3. This assemblycomprises an adapter 4G, having anon-circular opening snugly embracingthe end 69 of the aower shaft 3, the adapter including a cy indricalshell bifurcated by longitudinal yslots as at 47. 14. connecting link 45lits loosely into the adapter shell, and has a pair of pins 49projecting into said slots, thus constituting a universal: con nection.The reaming tool 48 which is of known construction is attached by asecond universal driving connection 52 to the free end of the link 45.The link is threaded at 50 for a substantial part of its length, and anut 5l cooperates with said threaded portion,

The detailed process of carrying out the reamingoperation consists infirst applying the assembly of F ig. 6 in place between the power shaftand the engine casting in a manner which is obvious. Power is thenapplied by starting the electrical motor ll and tightening the clutch 14by shifting the clutch lever 22, wherebythe power shaft is driven. Thenut 51 is then 'grasped by a pair of tongs or the like and held againstrotation, whereby the'link 45 will feed forwardly by reason of thethreaded connection and the reamer will simultaneously work its waythrough the three bearings for the well known purpose. K

As shown in the drawings the engine is mounted at a substantial distancefrom the power shaft 8, so. that the connecting link 45 for transmittingpower to the reamei must be of substantial length. Should the crankshaft axis be' inaccurately aligned with the continuation of the powershaft, the relatively long link by reasonof the universali connectionswill nevertheless cause the reamer to feed properly along the crankshaftaxis.

rPhe reaming operation having been conipleted, the reaming connection isremoved, the crankshaft is inserted in place within its bearings, andsaid bearings are then tightened to firmly `grip the crankshaft.

The crankshaft is now ready for the burnf ing in process, that is, theprocess of rotat ing the crankshaft under power for heating the bearingsand rendering them plastic to cause them to assume'the proper dimensionsrequired in use, this process being old and well known.

For transmitting the power for burning in the assembly shown in` Fig, 4is employed. An adapter 64 is employed similar to adapter 46 heretoforedescribed but materially shorter. A driving link 53 has a pair oftransverse pins 54 fitting in the slots 47 of the adapter 64.

`The opposite end of link 58 has a pair of pins 57 preferably at rightangles to pins 54, and fitting into a pair of slots 56 in a sleeve 55.This sleeve is mounted upon the end of the engine crankshaft, and hasrecesses 65 straddling the pins 58 formed as part of the standardconstruction of Ford engine crankshafts. As pins 58 may weak to transmitthe considerable power required in the burning in procesr I surround thesleeve 55 by means of a clamping ring 59, which relieves the torque fromthe 'pins 58, thus preventing shearing thereof.

The burning in of thel crankshaft being completed, the pistons may nowbe inserted into the cylinders, and the connecting rod bearingstightenedupon the throws ofthe crankshaft. F or this assemblingoperation, it is of course obvious that the carriage C may readily beturned to they position most convenient to the mechanic, the clamp' 39having first been opened, and after such position is reached said clamp.may again be vtightened to secure the carriage C in the adjustedposition. Power is now againk applied through the connecting link shown:in F ig. 4 forr the purpose of burning in the connecting rod bearings,andrunning in the pistons, and the piston rings.

The running in operation completed, the connecting link shown in Fig.4is removed, the clamp 89 is opened? and the carriage C vis rotated toand clamped-in convenient position for thelreanling of the valve guides,whereupon the valves may be ground. The engine may now be replaced, aswell as the flywheel assembly which includes the magneto in Fordengines. The latter elements can conveniently be passed through theannular end member 29 of laro'er diameter. At this stage the connectionof Fig. 4 may conveniently be employed to transmit driving power .to theengine crankshaftfrom the be toov CSi The carriage C is now rotated toplace the engine in upright position and power may be applied from moterll for limbering up the engine. By prefere-nce this power is appliedthrough the assembly shown in Fig. 5. This assembly includes the sameadapter 6e*- shown in the assembly of Fig. 4, and a driving link k(56similar to link 53 which should be of smaller diameter to lit into thecrankcase. Si sleeve 67 generally similar, .to sleeve connects` theengine crankshaft. to be driven from the adjacent end of link 6G.

After the motor is limbered up, the spark lugs are put into the cylinderhead and the various fuel, ignition and cooling water connect-ions aremade, whereupon the engine may be tested byrunning it under its ownpower while still mounted upon the carriage C in its original position.A

It will be apparent that in running the motor in under its own power theconnecting link arrangement shown in Fig. may be employed to crank theengine prior to starting by power from motor 1l transmitted through thepower shaft 3. Ratchet teeth 68 are formed upon sleeve 67 forcooperation with pins 58 on the engine crankshaft, said ratchet teethallowing the engine to run freely when it starts firing. i

. lt will be understood that the universal lconnection of the linksshown in Figs. t and 5 will compensate forv any smalllateraldisplacement of the crankshaft axis with respect to the powershaft, as in the case of the reaming connection above described.

The engine should now be in satisfactory ruiming condition and can bereapplied to lthe vehicle. For this purpose it is merely necessary toremove the single bolt when the completely assembled and tested engineis free to be taken olf the assembling machine.

The various steps that can be performed upon my assembling machine willnow be brieiiy reviewed.

The enOine is vrst set in place upon the carriage lt is thendisassembled until nothing but the cylinder casting is left in placeupon the carriage. The mainbearings are now replaced and reamed by powerthrough the machine. Next, the crankshaft is replaced and burned in, thepower being applied direct to said crankshaft. rlhen the pistons areinserted into the cylinders and the connecting rod bearings are clampedabout the crankshaft, whereupon power is again applied to the engine forrunning in the latter parts. Thereupon, the valve guides are reamed andthe valves ground, the

head replaced and the lywheelassembly including the magneto, reapplied.Power may nowbe applied to the crankshaft for testing ythe magneto. T heengine may now be completely assembled and can then be limberedv up bypower applied to the` crankshaft. After this limbering up process thespart plugs are put into the cylinder head, the fuel, ignition, andcooling water connections are made andthe motor is run in under its ownpower for test purposes, being rst conveniently cranked by powerdelivered from the power shaft.

The above steps, which constitute .all of the steps ordinarily requiredin overhauling an engine, require but single mounting operation of theengine casting upon the carriage. When once the engine is mounted inplace by the single bolt 35, theengine can be turned tothe position mostconvenient for performing each and every one of the above steps thereon,all by the simple process of opening the clamp 44C, turning the carriageC until the proper position is reached and again locking the clamp.

lt is of course apparent that all of the above steps need not beperformed in every case and that the order .of steps above pointed outneed not always be strictly followed.

It should particularly be noted that as the crankshaft axis of theengine when `mounted in position coincides with axis A-- of the carriageC, and as the klatter axis is aligned. with or onr the continuation ofpower shaft 3, power is readily transmitted from said shaft 3 `to thelcrankshaft or reaming tool, regardless to what position the car` riageis rotated. n f

Although the parts are so designed that the crankshaft of the enginewhen mounted inposition upon the carriage C is coaxial therewith, itwill be understood that certain of the advantages ofmy construction canbe secured if the engine be secured lwithits crankshaft axis parallel,to `the carriage axis instead of coincident therewith, in which event,the crankshaft would be aligned with the power shaft when the carriageis set in some one predetermined position.

Finally, it should be noted that although the specific installationshown and described has especial application to Ford engines, thebroader features of the invention are applicable to the overhauling ofvarious types of engines.

It will thus be seen that there is herein described apparatus in whichthe several features of this invention are embodied, and which apparatusin its action attains the various objects of the invention andk is wellsuited to meet the requirements of practical use.

As many changes` could be made in the above construction and many`apparently lOO widely different embodiments of this invention could bemade without departing from the scope thereof, it is intended that allmatter contained in the above description or shown in the accompanyingdrawings shall be interpreted as iliustrative and not in a limitingsense.

l claim:

l. In an engine overhauling machine, in combination, a bed,r an enginesupporting member thereon provided `with means for rigidly mounting anengine casting, said supporting member being adjustable to allow readyaccess to different parts of the engine for repair and assembly, andmeans on said bed adapted to transmit mechanical power to said enginefor repair purposes in inverted position. n

2. In an engine overhauling machine, in combination, a.' bed,- an enginesupporting member thereon provided with means for rigidly mounting anengine casting, means for securing said supporting member in any of avariety of positions about the longitudinal axis thereof to allow readyaccessto different parts of the engine for repair and assembly, andmeans on said bed aligned with the engine shaft both when lthesupporting member is secured for erect and when it is secured forinverted position of the engine to transmit mechanical power thereto ineither said position 3. In an engine overhauling machine, incombination, a bed,- an engine supporting member thereon provided withmeans for ri idl mountin an-encrine casting an ar-A cuate seat on saidbed for said supporting member, means securing said supporting member insaid seat in any of a plurality of positionsk to allow ready access todifferent parts of the engine for inspection and repair, and a powershaft onsaid bed for transmitting power to said engine for burning in ofthe bearings, said parts being so disposed relative to each other thatwhen an engine is properly mounted on said supporting member and thelatter is secured inv inverted position in its arcuate `seat thecrank-shaft of the engine is aligned with said power shaft.

.4. In an engine overhauling machine, in combination, a. bed, an enginesupporting member, means for mounting an' engine casting on saidsupporting member, standards on said bed for carrying said support ingmember, and permitting rotary adjustment ofthe latter about thelongitudinal axis thereof to allow ready access to dil-fen ent parts ofthe engine for repair and assembly, means for securing said supportingmember in any position to which it may be adjusted, a power-shaft onsaid bed aligned with the crankshaft of an engine when in place on rsaidsupporting member. and means passing ltlfn'ough a recess in the end ofsaidy supportingmember for establishing a power connection between saidpower shaft and said engine. v

5. In an engine overhauling machine, in combination, a bed, means formounting an 70 engine casting thereon, -with the axis ofthe crankshaftthereof in a single fixed position, means for securing 'said casting inany of aplurality of positions about said fixed anis of thecrankshaft,anda power shaft on said bed aligned with saidaXis.

6. In an engine overhauling machine, iny combination, a bed, an enginesupporting member having a circular portion resting on said bed, meansfor securing an engine casting to said support with the crankshaft axisof said casting coaxial with said cir-` cular portion and means`forsecuring said casting with respect to said bed in any'of apluralityof positions which it may assume by rotating the circularsupport yportion about its center upon said bed, whereby said crankshaftaxis will remain in a fixed position in any said position of saidcasting.

7. In an engine overhauling machine, in combination, a bed, a pair ofarcuate seats thereon, an engine supporting member having" a pair ofcircular portions revolubly resting yupon said arcuate seats, saidsupport having means for securing an engine cas-ting thereto with thecrankshaft axis of thelatter coaxial orf-said circular portions, meansclamping said supporting member to said bed in any position to whichitmaybe adjustedon said seats, one said circular por- 100 tion having acentral opening to permit power connection with the crankshaft.

8. In an engine overhauling machine, in combination, a bed, an enginesupporting member having a Lpair yof circular portions 1'05 and a beamconnecting the same, arcuate seats on said bed for said circularportions, means for securing anengine casting to said beam with thecrankshaft aXis thereof coaxial with said circular portions, means 110clamping one of said circularfportions in any position to which saidsupporting member may be rotated upon said seats, and a power shaft onAsaid bed, aligned with said crankshaft axis, whereby a power 11.5`

being constructed. and yarranged such that the crankshaft axis Visaligned with said power shaft when the' ybleclrvvs in inverted `iso Isupporting member position for ready reaining of the crankshaftbearings, and means for securing said supporting member to said bed withsaid engine in said erect positiony latter under its own yvenientposition for each step in the-repair and. assembly of tbe engine'e G 7 and burning in of the the elements of Lsaid overhauling machinebeing constructed and arranged such that the crankshaft axis of saidcasting is aligned with said power shaft when ythe casting is ininverted position to 'permit ready rea-ming crankshaft bearings,

and means for securing said supporting member to said bed with saidengine in erect position to allow running in of the latter under its ownpower in its original position with respect to said support.

11; 1n an engine overhauling machine7 in combination, a'bed, a powershaft thereon, longitudinally `spaced and aligned arcuate seatsupon'said bed, an engine supporting member having an intermediate-niember and circular end members, the latter resting revolubly in saidseats, and being coaxial with said power shaft, means for rigidlysecuring an engine casting to said intermediate member, with thecrankshaft axis of said casting aligned with said power shaft, and aseverable power connection between said power shaft and said engine,whereby the crankshaft bearings may be readily reamed 'from said powershaft, the bearing members may be applied, and burned in by power fromsaid shaft, the parts of the engine may be readily assembled upon saidcasting, 4and said supporting member may be turned to place said enginein vertical posit-ion to permit testing` of the same under itsown powerin itsorigiiial mounting with respect to said supporting member. i 12.rllhe combination in an engine overliauling machine, of bed, a powershaft thereon, an engine supporting member mounted upon said bed forrotary adjustnient abouty its longitudinal axis, means for securing saidsupporting member in any position of adjustment, means 'for rigidlymounting an engine upon said supporting member with the crankshaft axisthereof aligned with said power shaft, to permit burning in of thecrankshaft by power from said power shaft, whereby afterthe burning` inprocess, said supporting'member may be rotated and secured 'in positionto dispose and burning in ing machine, of a bed, a power shaft there'on, an engine supporting` member comprising an intermediate element, andcircular end portions, the latter coaxial with said power shaft. arcuateseats on said bedy for' said lend portions whereby said supportingmember is revolubly mounted in said seats, means for clamping` saidsupporting member in any position of adjustnientn and means on saidsupporting niember for rigidly securing` a FordY engine thereon with thecrankshaft axisk of said engine aligned with said power shaft, to permitburning in of the crankshaft by power from rsaid power shaft.

11i, The combination in 4an engine over'- hauling machine, of a bed, apower shaft thereon, an engine carriage on said bed, adapted to havemounted thereon an engine casting with the crankshaft axis thereofsubstantially aligned with said power shaft, a tool for reaming thecrankshaft bearings and a link connecting said power shaft with saidtool, said link having a universal connection at each end.

l5. fr carriage for an overhauling machine for engines comprising apairof coaxialr ring members, onev of larger diameter than the other, across beam rigidly connecting said rings, said cross beam having` anengineJ supporting part, saidpart being parallel to the axis of saidcarriage.

16. A carriage for an overhauling machine for engines comprising a pairof coaxial ring members one of larger diameter than the other, a pair ofchannel cross bean'xs rigidly connecting said rings, one said cross beamhaving a substantial part of its length parallel to the axis of saidcarriage, andan engine rest' upon said part.

17. The combination in an engine overyhauling` machine, of a bed, akpower shaft thereon, an engine carriage onsaid bed having the axisthereof aligned with said power shaft, and adapted to have mountedthereon an engine to be overhaulech in such manner as to dispose theerinkshaft axis thereof in substantial alignment with said power shaft,and at a substantial distance therefrom, and a removable link forconnecting said power shaft and said crankshaft of said engine, saidlink having a universal driving connection at each end.

` 18, `The combination in an engine overhauling machine for Fordengines, of a bed, a power shaft thereon, an engine carriageadjustableabout a fixed axis on said bed, means for coactionwith an engine castingintermediate the ends thereof for securing the same to said carriagewith the crank'- shaft axis thereof substantially aligned with saidpower shaft, in every position of adjustment of said carriage, whereby'when the engine is mounted on the carriage with the front end thereofnearest said power shaft, a power connection may be established be*tween said power shaft and said Crankshaft for burning in the latter.and wherebyithe flywheel assembly including the magneto may readily beassembled upon the engine casting` without disturbing said securingmeans, and whereby the crankshaft may then be driven from said powershaft for testingr said magneto.

19. The combination in an overhanling engine. of a bed, a 'power shaftthereon. an engine carriage on said bed. said carriage o having a largeopen en d portion remote from said power shaft to facilitate assemblyofengine parts therethrough and an open portion on the end nearest saidpower shaft, to permit application of power from said power shaft to theengine to be overhauled, and

' means for securing said engine toY said carriage, said means beingdisposed intermediate the top and bottoni as well as intermediate theends of the cylinder casting of said engine, to permit all overhaulingsteps to be readilyl performed.

20. The combination in an overhauli'ng engine, of a bed, a power shaft`thereon, an engine carriage on said bed.y said carriage Lhaving a largeopen end portion reino-te thereon.

In testimony whereof, have signed my name to this specification this23rd day of March 1920. Y f

JOHN J. SCHVA-RZ.

